Priming-cup for gas-engines.



R. G. DU BOIS.

PRIMING CUP'FOR GAS ENGINES. APPLICATION FILED MN. 16, 1915.

Patented July 18, 1916.

Ill/ [/5 IV TOR BHESA Gr. DU-BQIS, OF EAST ORANGE, NEW JERSEY.

rename-cor ron ens-ENGINES.

Specification of Letters Patent. Patented July 18, 1916.

Application filed January 16, 1915. Serial No. 2,520.

To all whom it may concern Be it known that I, Rrrnsn Gr. DU 1301s, a citizen of the United States, and resident of East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Priming- Cups for Gas-Engines, of which the following is a specification.

This invention relates to priming cups for gasolene engines, and the object sought to be attained is to provide means which will automatically operate to close the cup and exclude dust after the valve therein is closed, thereby keeping the cup clean and leaving no deposit of dust to be washed down through the cup into the engine cyllnder every time the latter is primed.

To this end my invention consists in the peculiar features and combinations of parts to be more fully described hereinafter and pointed out in the claims.

In the accompanying drawings: Figure 1 represents a side elevation of my invention as applied to an ordinary form of primlng cup wherein the parts are shown in closed adjustment; Fig. 2 a similar view in section showing the cupopen, dotted lines indicating the closed position. Fig. 3 is a top view as when the oil valve is open and my cover removed, Fig. t front elevation showing the parts in closed position, and Fig. 5 a modification showing the cover supported by one arm, the yoke form of manipulating lever being dispensed with.

The reference numeral 1 represents the bowl or cup proper, and 2 the neck.

3 is a tapered valve passing transversely through the neck and provided with a hole 3 and held in its seat by a spring 4 encircling an extension 5. The spring and valve are held by a cross-pin 6.

7 is a screw-threaded shank adapted to enter the end of an engine cylinder, and 8 are wrench faces.

All of the above features are common to the art.

I have found in practice that considerable quantities of road dust and grit will accumulate in the cup and will be washed down into the engine cylinder whenever gasolene or oil is poured through the cup during the priming operation. This difficulty I overcome by providing a device which automatically closes the bowl of the cup whenever the valve is closed and opens the former whenever the valve is opened. This device consists of a cover .9 on the free end of a manipulating lever or yoke 10 and arranged so as to swing over and close the bowl. The lower ends 11 and 12 of downwardly ex tending arms 13 and 11 of the yoke 10 are fixed by pin 16 to turn with the valve 3, a handle 15 at the top of the yoke serving to give greater leverage and facilitate manipulation. The cover 9 is formed integral with the arms 13 andl-it for convenience in manufacture and to prevent torsional strain. The top edge 17 of the bowl 1 and the underside 18 of the cover are curved in conformity with the arcof the circle in which the cover swings during the opening and closing operations of the valve in order to more perfectly close the cup against dust and dirt.

In Fig. 5'the left hand'arm 13 shown in the other views is dispensed with and only a single lever 19 is used. A cover 20 is attached integrally to the free end of the lever 19. This cover projects laterally or at right angles to the lever 19 and swings over the mouth 21 of cup 22 in the same way that the cover 9' does in the principal views. A handle 23 is off-set relatively to the center of the cup in order to bring the handle more nearly in line with the lever 19 and thereby reduce torsional strain on the latter during manipulation. The; lever 19 is fixed to turn with a tapered valve 2 1 by a pin 25, and when the lever is in the raised position shown it turns the oil hole 26 in the valve across the oil duct 27 in the cup and stops the flow of oil or gas, at the same time bringing the cover 9 over the mouth of the cup 22 to protect it from dust and dirt.

Thus constructed the operation of my de vice is as follows: Normally the bowl of the priming cup remains closed as shown in Figs. 1, 4t and 5. When parts of the cup are in such position the manipulating lever stands upright and the oil hole 3 lies crosswise of the duct 4 and the cover 9 is over the mouth of the cup. When it is desired to prime the engine the cup is openedby manually grasping the handle 15 and turning the lever 10 down into the horizontal position shown in Fig. 2. This action carries the cover 9 with the lever 10 and uncovers the cup, thereby bringing the transverse hole 3 into coincidence with the oil duct 4? for the reception of gasolene; and as the cup has been protected by the cover, the interior will be left clean and no extraneous matter washed" down into an engine cylinder to do damage.

Although I have shown the preferred form of carrying out my invention it is apparent that innumerable variations might be con trived without escaping the essence of my device.

W'Vhat I claim is:

l. A priming cup for internal combustion engines and the like comprising a bowl having a member with a discharge duct from the bowl, a rotary valve for opening and closing said duct, and an exterior arm provided with a cover for said bowl, said. arm being movable with the valve to pass the cover over the rim of the bowl to closed position as the valve closes the duct and to opened position as the valve opens the duct, the rim of the bowl forming oppositely located convex portions each extending approximately half way around said rim, the under surface of said cover being correspondingly curved to pass over the top edge of the rim completely around the same when the cover is in closed position.

2. A priming cup for internal combustion engines and the like comprising a bowl having a stem with a discharge duct from the bowl, a valve turnable for opening and closing said duct and provided with an exterior arm having a laterally extending cover for the top of said bowl, the rim of said bowl forming oppositely located semi-circular convex portions, the under surface of said cover being correspondingly curved to pass over said rim and to fit the same completely around the bowl when the eov r is in closed position.

3. A priming cup for internal combustion engines and the like comprising a bowl having a discharge outlet, the open end of said bowl being convexed throughout its width from one edge portion thereof to the opposite edge portion thereof, a cover for said open end of the bowl having its under surface correspondingly conoaved to pass over the edge of the bowl and fit the same completely around said open end to close the bowl, a valve to close and open said outlet, and a radial arm carrying said cover and moving with said valve to close and open said end of the bowl as the valve closes and opens said outlet.

Signed at New York, in the county of New York and State of New York this 15 day of January A. D. 1915.

RHESA G. DU BOIS.

Witnesses FRED E. TASKER, JAMES A. RIDGWAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

